Speckle activity images based on the spatial variance of the phase
- Autores
- Rabal, Héctor Jorge; Cap, Nelly Lucía; Trivi, Marcelo Ricardo; Arizaga, Ricardo; Federico, Alejandro; Galizzi, Gustavo E.; Kaufmann, Guillermo H.
- Año de publicación
- 2006
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We propose the display of the local spatial variance of the temporal variations of the phase as an activity descriptor in dynamic speckle images. The spatial autocorrelation of the speckle intensity is calculated in sliding windows, and an estimation of the variance of the phase variations in each region of the sample is determined. The activity images obtained in this way depict some interesting features and in some cases they could be related to physical magnitudes in the samples. A simulation is presented, and examples corresponding to usual study cases are also shown, namely, fruit bruising and paint drying.
Facultad de Ingeniería (FI)
Centro de Investigaciones Ópticas (CIOp) - Materia
-
Física
Speckle activity images
variations of the phase - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/80644
Ver los metadatos del registro completo
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Speckle activity images based on the spatial variance of the phaseRabal, Héctor JorgeCap, Nelly LucíaTrivi, Marcelo RicardoArizaga, RicardoFederico, AlejandroGalizzi, Gustavo E.Kaufmann, Guillermo H.FísicaSpeckle activity imagesvariations of the phaseWe propose the display of the local spatial variance of the temporal variations of the phase as an activity descriptor in dynamic speckle images. The spatial autocorrelation of the speckle intensity is calculated in sliding windows, and an estimation of the variance of the phase variations in each region of the sample is determined. The activity images obtained in this way depict some interesting features and in some cases they could be related to physical magnitudes in the samples. A simulation is presented, and examples corresponding to usual study cases are also shown, namely, fruit bruising and paint drying.Facultad de Ingeniería (FI)Centro de Investigaciones Ópticas (CIOp)2006info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf8733-8738http://sedici.unlp.edu.ar/handle/10915/80644enginfo:eu-repo/semantics/altIdentifier/issn/1539-4522info:eu-repo/semantics/altIdentifier/doi/10.1364/AO.45.008733info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:47:08Zoai:sedici.unlp.edu.ar:10915/80644Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:47:08.506SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Speckle activity images based on the spatial variance of the phase |
| title |
Speckle activity images based on the spatial variance of the phase |
| spellingShingle |
Speckle activity images based on the spatial variance of the phase Rabal, Héctor Jorge Física Speckle activity images variations of the phase |
| title_short |
Speckle activity images based on the spatial variance of the phase |
| title_full |
Speckle activity images based on the spatial variance of the phase |
| title_fullStr |
Speckle activity images based on the spatial variance of the phase |
| title_full_unstemmed |
Speckle activity images based on the spatial variance of the phase |
| title_sort |
Speckle activity images based on the spatial variance of the phase |
| dc.creator.none.fl_str_mv |
Rabal, Héctor Jorge Cap, Nelly Lucía Trivi, Marcelo Ricardo Arizaga, Ricardo Federico, Alejandro Galizzi, Gustavo E. Kaufmann, Guillermo H. |
| author |
Rabal, Héctor Jorge |
| author_facet |
Rabal, Héctor Jorge Cap, Nelly Lucía Trivi, Marcelo Ricardo Arizaga, Ricardo Federico, Alejandro Galizzi, Gustavo E. Kaufmann, Guillermo H. |
| author_role |
author |
| author2 |
Cap, Nelly Lucía Trivi, Marcelo Ricardo Arizaga, Ricardo Federico, Alejandro Galizzi, Gustavo E. Kaufmann, Guillermo H. |
| author2_role |
author author author author author author |
| dc.subject.none.fl_str_mv |
Física Speckle activity images variations of the phase |
| topic |
Física Speckle activity images variations of the phase |
| dc.description.none.fl_txt_mv |
We propose the display of the local spatial variance of the temporal variations of the phase as an activity descriptor in dynamic speckle images. The spatial autocorrelation of the speckle intensity is calculated in sliding windows, and an estimation of the variance of the phase variations in each region of the sample is determined. The activity images obtained in this way depict some interesting features and in some cases they could be related to physical magnitudes in the samples. A simulation is presented, and examples corresponding to usual study cases are also shown, namely, fruit bruising and paint drying. Facultad de Ingeniería (FI) Centro de Investigaciones Ópticas (CIOp) |
| description |
We propose the display of the local spatial variance of the temporal variations of the phase as an activity descriptor in dynamic speckle images. The spatial autocorrelation of the speckle intensity is calculated in sliding windows, and an estimation of the variance of the phase variations in each region of the sample is determined. The activity images obtained in this way depict some interesting features and in some cases they could be related to physical magnitudes in the samples. A simulation is presented, and examples corresponding to usual study cases are also shown, namely, fruit bruising and paint drying. |
| publishDate |
2006 |
| dc.date.none.fl_str_mv |
2006 |
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http://sedici.unlp.edu.ar/handle/10915/80644 |
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eng |
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